Question

Two long, parallel conductors, separated by 12.0 cm, carry currents
in the same direction. Thefirst wire carries current
I1 = 2.00 A, and the second
carriesI2 = 8.00 A (See figure below. Assume
theconductors lie in the plane of the page.)

(a) What is the magnitude of the magnetic field created
byI1 at the location
ofI2?
T

(b) What is the force per unit length exerted
onI2 by I1?
N/m

(c) What is the magnitude of the magnetic field created
byI2 at the location
ofI1?
T